I measured Milli 4 month old Blue merle today and shes about 12 1/2 - 12 3/4 inches tall at the withers ( more or less) and weights 12.5-13 pounds.
I hope she grows on the tall side.
Well, Back in March 2012 Milli was 4 months old 12.5 inches tall and 12.5 pounds....
Now Milli is 14 months old and is maybe a bit over 19 inches tall ( at the shoulders) and weighs roughly 40 pounds.
shes a big healthy sheltie.

) 
